Building material tension detection device for building engineering

Abstract

The invention relates to the technical field of building material tension detection, in particular to a building material tension detection device for building engineering, which comprises support legs, a base, a control panel, a box body, a door plate, a handle and a stretching assembly, a base is fixedly installed on the supporting legs, a control panel is fixedly installed on the top of the base, a box body is fixedly installed on the top of the base, a door plate is hinged to the box body, a handle is fixedly installed on the door plate, and stretching assemblies are fixedly installed on the inner wall of the top of the box body and the inner wall of the bottom of the box body respectively. The stretching assembly is used for fixing the measured object, stretching the measured object and further clamping the measured material; according to the invention, during tension detection, the clamp can clamp to-be-detected objects in different shapes to the maximum extent, and in the tension detection process, the to-be-detected objects do not fall off from the clamp, so that the tension detection efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of tensile testing technology for building materials, and in particular to a tensile testing device for building materials used in construction projects. Background Technology

[0002] In the field of construction engineering, tensile testing of various building materials and components is a crucial means of quickly assessing their mechanical properties and safety factors. Therefore, tensile testing plays a vital role in construction engineering, not only helping to ensure the quality of building materials but also providing data support for structural design optimization, thereby comprehensively improving the safety and implementation effectiveness of engineering projects.

[0003] Existing tensile testing devices can test objects of different shapes and sizes. However, during the testing process, the contact area between the object and the clamp is different for objects of different shapes, and the friction between them will also be different. In addition, the clamping force applied to the object when it is manually clamped and fixed is also different. This can easily cause the object to fall off the clamp during the tensile testing process, thus affecting the efficiency of the tensile testing. Summary of the Invention

[0004] The technical objective of this invention is to solve the problem that in existing tensile testing devices, the contact area between the tested object and the clamp varies depending on the shape of the object and the clamping force applied to the object during manual clamping, which easily leads to the object falling off the clamp during tensile testing and thus affects the efficiency of tensile testing. This invention achieves a solution where, during tensile testing, the clamp can hold the tested object of different shapes to the maximum extent, and the object will not fall off the clamp during the tensile testing process, greatly improving the efficiency of tensile testing.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A tensile testing device for building materials used in construction engineering includes: a support leg, a base, a control panel, a housing, a door panel, a handle, and a tensile assembly; the base is fixedly installed on the support leg, the control panel is fixedly installed on the top of the base, the housing is fixedly installed on the top of the base, the door panel is hinged to the housing, the handle is fixedly installed on the door panel, and the tensile assembly is fixedly installed on the inner wall of the top and the inner wall of the bottom of the housing, respectively; the tensile assembly fixes the object to be tested, stretches the object to be tested, and further clamps the material to be tested.

[0007] As a preferred embodiment of the tensile testing device for building materials used in construction engineering according to the present invention, the tensile component includes a disc, movable plates, rotating rings, moving blocks, connecting rods, and contact modules; multiple movable plates are arranged in a circular array around an axis on the disc, rotating rings are rotatably mounted on the outer sides of the multiple movable plates, moving blocks are slidably mounted on the inner sides of the multiple movable plates, and the moving blocks are located on one side of the disc, a connecting rod is fixedly mounted in the middle of the moving blocks, and contact modules are fixedly mounted on the multiple movable plates respectively, and the multiple contact modules are located on the other side of the disc.

[0008] As a preferred embodiment of the tensile testing device for building materials used in construction engineering according to the present invention, the disc has a circular hole in the center, and multiple arc-shaped grooves are arranged in a ring around the axis on the disc, and the multiple arc-shaped grooves are respectively hinged to the multiple movable plates by fixing pins.

[0009] In a preferred embodiment of the tensile testing device for building materials used in construction engineering according to the present invention, wherein: a connecting plate is respectively provided on the inner side of one end of the plurality of movable plates near the moving block, and a rectangular sliding groove is respectively provided in the middle part of the plurality of connecting plates; a stop block is respectively provided at the end of the plurality of movable plates near the moving block; a rectangular groove is respectively provided on the inner side of one end of the plurality of movable plates away from the moving block; a toothed block is respectively provided on the outer side of one end of the plurality of movable plates away from the moving block; and a limiting block is provided on the outer side of the middle part of the plurality of movable plates, and the limiting block is located at the end of the toothed block.

[0010] As a preferred embodiment of the tensile testing device for building materials used in construction engineering according to the present invention, the contact module includes an arc-shaped box, an arc-shaped block, a support base, a compression spring, a connecting block, a cylindrical pin, and a contact plate; multiple arc-shaped blocks are arranged in a linear array on the outer side of the arc-shaped box, and the multiple arc-shaped blocks cooperate with multiple rectangular grooves; a support base is fixedly installed inside the arc-shaped box; compression springs are fixedly installed at both ends inside the arc-shaped box; the support base is hinged to the connecting block through a cylindrical pin; a contact plate is fixedly installed on the connecting block; multiple trapezoidal protrusions are arranged in a linear array on the outer surface of the contact plate, and the inner walls at both ends of the contact plate are fixedly connected to the compression springs.

[0011] As a preferred embodiment of the tensile testing device for building materials used in construction engineering according to the present invention, the moving block is a conical structure, and a plurality of rectangular protrusions are arranged in a circular array around the axis on the outer circumference of the moving block of the conical structure, and the plurality of rectangular protrusions are respectively slidably engaged with a plurality of rectangular grooves, and a circular groove is provided in the middle of the moving block.

[0012] As a preferred embodiment of the tensile testing device for building materials used in construction engineering according to the present invention, the inner circumference of the rotating ring is provided with threaded protrusions, and the threaded protrusions cooperate with the plurality of tooth blocks. The outer circumference of the rotating ring is provided with a plurality of cylindrical rods arranged in a ring array around the axis.

[0013] In a preferred embodiment of the tensile testing device for building materials used in construction engineering as described in this invention, the connecting plate is a wedge-shaped structure, and the wedge-shaped surface on the inner side of the connecting plate slides in conjunction with the conical surface on the moving block.

[0014] In a preferred embodiment of the tensile testing device for building materials used in construction engineering as described in this invention, the toothed block has a wedge-shaped structure, and the height value of the end of the toothed block near the limiting block is less than the height value of the end away from the limiting block.

[0015] As a preferred embodiment of the tensile testing device for building materials used in construction engineering according to the present invention, the base is provided with a hydraulic pump, the hydraulic pump is provided with a hydraulic telescopic rod, and the hydraulic telescopic rod is fixedly connected to a connecting rod on the inner wall of the bottom of the box through a tensile sensor, and the hydraulic pump is electrically connected to the control panel.

[0016] The beneficial effects of this invention are:

[0017] 1. This invention provides a tensioning component inside the housing. Through the cooperation of the tensioning component and the hydraulic telescopic rod, the clamping force of the tensioning component on the tested object increases synchronously as the tensile force slowly increases during the tensile testing process, thereby preventing the tested object from falling off the clamp and greatly improving the efficiency of tensile testing.

[0018] 2. This invention provides a rotating ring, a movable plate, and a moving block on the tensile assembly. The rotating ring drives the movable plate to rotate, initially fixing the object to be tested. Then, during the tensile test, the moving block moves slightly, causing the movable plate to rotate slightly, further clamping the object to be tested. This prevents the object from falling off the fixture during the test and improves the stability of clamping during the tensile test.

[0019] 3. The present invention has a contact module on the movable plate. The movable plate rotates to make contact with the object being tested. The contact module can automatically adjust the angle of the contact plate according to the shape of the object being tested, thereby maximizing the contact of the contact plate with the object being tested, increasing the force-bearing area and greatly improving the stability of clamping during tensile testing. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the overall three-dimensional structure in an embodiment of this disclosure.

[0021] Figure 2 This is a three-dimensional structural diagram of the base in an embodiment of this disclosure.

[0022] Figure 3 This is a three-dimensional structural diagram of the stretching component in an embodiment of this disclosure.

[0023] Figure 4 This is a three-dimensional structural diagram of the tensioning component without a rotating ring in an embodiment of this disclosure.

[0024] Figure 5 This is a three-dimensional structural diagram of the tensioning assembly without a rotating ring and a contact module in an embodiment of this disclosure.

[0025] Figure 6 This is a three-dimensional structural diagram of the disk and movable plate in an embodiment of this disclosure.

[0026] Figure 7 This is a three-dimensional structural diagram of the rotating ring in an embodiment of this disclosure.

[0027] Figure 8 This is a three-dimensional structural diagram of the disk in an embodiment of this disclosure.

[0028] Figure 9 This is a three-dimensional structural diagram of the moving block and connecting rod in an embodiment of this disclosure.

[0029] Figure 10 This is a three-dimensional structural diagram of the movable plate in an embodiment of this disclosure.

[0030] Figure 11 This is a three-dimensional structural diagram of the contact module in an embodiment of this disclosure.

[0031] Reference numerals: 1. Support leg; 2. Base; 21. Hydraulic pump; 22. Hydraulic telescopic rod; 3. Control panel; 4. Housing; 5. Door panel; 6. Handle; 7. Tension assembly; 71. Disc; 711. Circular hole; 712. Arc-shaped groove; 713. Fixing pin; 72. Movable plate; 721. Limiting block; 722. Toothed block; 723. Connecting plate; 724. Rectangular slide; 725. Rectangular groove; 726. Stop block; 73. Rotating ring; 731. Threaded protrusion; 732. Cylindrical rod; 74. Moving block; 741. Circular groove; 742. Rectangular protrusion; 75. Connecting rod; 76. Contact module; 761. Arc-shaped box; 762. Arc-shaped block; 763. Support base; 764. Compression spring; 765. Connecting block; 766. Cylindrical pin; 767. Contact plate; 768. Trapezoidal protrusion. Detailed Implementation

[0032] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] like Figures 1 to 11 As shown, a tensile testing device for building materials used in construction engineering includes: a support leg 1, a base 2, a control panel 3, a housing 4, a door panel 5, a handle 6, and a tensile assembly 7; the base 2 is fixedly installed on the support leg 1, the control panel 3 is fixedly installed on the top of the base 2, the housing 4 is fixedly installed on the top of the base 2, the door panel 5 is hinged to the housing 4, the handle 6 is fixedly installed on the door panel 5, and the tensile assembly 7 is fixedly installed on the inner wall of the top and the inner wall of the bottom of the housing 4 respectively; the tensile assembly 7 fixes the object to be tested, and the object to be tested is stretched by the tensile assembly 7, while further clamping the material to be tested.

[0034] Outrigger 1 provides a stable support foundation for the entire device, while base 2 serves as the main load-bearing component of the device and integrates core power components such as a hydraulic drive system.

[0035] A control panel 3 is fixedly installed on one side of the top of the base 2. The control panel 3 is equipped with a high-definition display screen, operation buttons and data interface. Operators can set test parameters, start or stop the test process through the control panel 3, and view key information such as tensile data curve and peak tensile force in real time. After the test is completed, the test report can be exported through the data interface to realize the digital management of test data.

[0036] The front of the enclosure 4 is hinged to a door panel 5, which is made of high-strength transparent tempered glass. This ensures that operators can clearly observe the internal testing process while also providing good protection against flying fragments that could cause safety hazards in the event of material breakage. The door panel 5 allows operators to easily open or close it.

[0037] During the testing process, the tensile assembly 7 first fixes both ends of the object under test via the rotating ring 73, ensuring that the material does not loosen or shift during the tensile process. As the test begins, the tensile assembly 7, driven by the hydraulic system inside the base 2, generates relative displacement, applying axial tension to the object under test. Simultaneously, its special linkage structure automatically increases the clamping force on the object under test as the tension increases, effectively preventing the material from detaching from the clamping point under high tension, thus ensuring the safety of the testing process and the accuracy of the test results.

[0038] like Figures 3 to 5As shown, the stretching assembly 7 includes a disc 71, movable plates 72, rotating rings 73, moving blocks 74, connecting rods 75, and contact modules 76. Multiple movable plates 72 are arranged in a circular array around the axis on the disc 71. Rotating rings 73 are rotatably mounted on the outer side of the multiple movable plates 72. Moving blocks 74 are slidably mounted on the inner side of the multiple movable plates 72, and the moving blocks 74 are located on one side of the disc 71. Connecting rods 75 are fixedly mounted in the middle of the moving blocks 74. Contact modules 76 are fixedly mounted on the multiple movable plates 72, and the multiple contact modules 76 are located on the other side of the disc 71.

[0039] The basic load-bearing component of the tensioning assembly 7 is a disc 71. With the central axis of the disc 71 as the reference, multiple movable plates 72 are evenly arranged in a ring array on its end face. The movable plates 72 are connected to the disc 71 through a precise hinge structure, which ensures that the movable plates 72 can rotate flexibly and can withstand the huge force generated during the tensioning process.

[0040] On the outer side of multiple movable plates 72, a rotating ring 73 is concentrically fitted. The rotating ring 73 engages with the toothed block 722 on the outer side of the movable plate 72 through a threaded protrusion 731, thereby achieving rotatable installation. When the operator rotates the rotating ring 73 through the cylindrical rod 732, its rotational motion can be converted into a driving force to push the movable plate 72 to rotate, providing power support for subsequent clamping actions.

[0041] The shape of the movable block 74 is adapted to the sliding groove on the inner side of the movable plate 72, allowing it to slide smoothly along the inner track of the movable plate 72. The movable block 74 is installed on one side of the disc 71, close to the connecting end of the connecting rod 75. The connecting rod 75 is fixedly installed in the middle of the movable block 74 by bolts. The connecting rod 75 serves as a force transmission component, with one end rigidly connected to the movable block 74 and the other end connected to the hydraulic telescopic rod 22 in the base 2. The tension generated by the hydraulic system is precisely transmitted to the movable block 74 through the connecting rod 75, thereby driving the entire tensioning assembly 7 to complete the tensioning action.

[0042] On the side of the multiple movable plates 72 away from the moving block 74, i.e., on the other side of the disc 71, contact modules 76 are fixedly installed. The contact modules 76 are made of wear-resistant and non-slip material and are in direct contact with the object being measured. The multiple contact modules 76 are arranged in a ring. When the movable plates 72 rotate under the drive of the rotating ring 73, the contact modules 76 can synchronously move towards the center or open outward, thereby accommodating materials of different diameters and ensuring reliable clamping of the material.

[0043] like Figure 8 As shown, a circular hole 711 is provided in the middle of the disk 71, and multiple arc-shaped grooves 712 are arranged in a ring around the axis on the disk 71. The multiple arc-shaped grooves 712 are respectively hinged to multiple movable plates 72 by fixing pins 713.

[0044] The round hole 711 is used so that both ends of the object being measured can pass through the round hole 711 when it is fixed, and it is suitable for objects of different lengths, ensuring that both ends of the material can smoothly enter the clamping area of ​​the upper and lower tensioning components 7.

[0045] On the end face of the disc 71, multiple arc-shaped grooves 712 are evenly arranged in a circular array around the central axis. The number of arc-shaped grooves 712 corresponds one-to-one with the number of movable plates 72. Each arc-shaped groove 712 is hinged to the corresponding movable plate 72 through a fixing pin 713. This hinge structure allows the movable plate 72 to rotate flexibly around the fixing pin 713 as the rotation center. This ensures the smooth opening and closing of the movable plate 72 driven by the rotating ring 73, and also evenly transmits the force generated during the stretching process to the disc 71 through the fixing pin 713, dispersing stress concentration and improving the structural load-bearing capacity of the entire stretching assembly 7.

[0046] like Figure 10 As shown, a connecting plate 723 is provided on the inner side of one end of the multiple movable plates 72 near the moving block 74, and a rectangular sliding groove 724 is provided in the middle of the multiple connecting plates 723. A stop block 726 is provided at the end of the multiple movable plates 72 near the moving block 74. A rectangular groove 725 is provided on the inner side of one end of the multiple movable plates 72 away from the moving block 74. A toothed block 722 is provided on the outer side of one end of the multiple movable plates 72 away from the moving block 74. A limit block 721 is provided on the outer side of the middle of the multiple movable plates 72, and the limit block 721 is located at the end of the toothed block 722.

[0047] The connecting plate 723 serves as the connecting medium between the movable plate 72 and the moving block 74, ensuring the stable fit of the planar moving block 74. Each connecting plate 723 has a rectangular groove 724 in its middle section. The size of the rectangular groove 724 matches the rectangular protrusion 742 on the moving block 74. When the moving block 74 slides inside the movable plate 72, the rectangular protrusion 742 of the moving block 74 can move smoothly along the rectangular groove 724. Through the cooperation of the groove and the protrusion, it not only guides the sliding of the moving block 74 but also restricts the displacement direction of the moving block 74, ensuring the effective transmission of force between the moving block 74 and the movable plate 72.

[0048] Multiple movable plates 72 are equipped with stops 726 near the ends of the movable block 74. The stops 726 are protruding and perpendicular to the surface of the movable plate 72, and are located on the outside of the connecting plate 723. The main function of the stops 726 is to limit the sliding stroke of the movable block 74. When the movable block 74 slides to the preset position, the stops 726 will contact the edge of the movable block 74 to prevent the movable block 74 from detaching from the movable plate 72 due to excessive sliding, thus ensuring the stability of the connection between the two. At the same time, it also prevents excessive tension, which could lead to excessive clamping force of the movable plate 72 on the object being measured, thereby causing the movable plate 72 to break.

[0049] Rectangular slots 725 are respectively formed on the inner side of the end of the multiple movable plates 72 away from the moving block 74. The contact module 76 is slidably installed in the rectangular slot 725. This is to facilitate the easy disassembly and replacement of the contact module 76. The corresponding contact module 76 can be replaced according to the different shapes and sizes of the objects being measured, thereby improving the detection efficiency and the applicability of the equipment.

[0050] The toothed block 722 meshes with the threaded protrusion 731 on the inner side of the rotating ring 73. When the rotating ring 73 rotates, the rotational motion of the rotating ring 73 is converted into the rotational power of the movable plate 72 through the meshing action of the toothed block 722 and the threaded protrusion 731, thereby realizing the opening and closing action of the movable plate 72, and driving the contact module 76 to clamp or release the object being measured.

[0051] The limiting block 721 is higher than the toothed block 722, which can limit the axial movement range of the rotating ring 73. When the rotating ring 73 rotates to the limit position, the limiting block 721 will contact the edge of the rotating ring 73 to prevent the rotating ring 73 from moving excessively and causing the toothed block 722 to fall off the rotating ring 73.

[0052] like Figure 11 As shown, the contact module 76 includes an arc-shaped box 761, an arc-shaped block 762, a support base 763, a compression spring 764, a connecting block 765, a cylindrical pin 766, and a contact plate 767. Multiple arc-shaped blocks 762 are arranged in a linear array on the outer side of the arc-shaped box 761, and these arc-shaped blocks 762 cooperate with multiple rectangular slots 725. A support base 763 is fixedly installed inside the arc-shaped box 761. Compression springs 764 are fixedly installed at both ends inside the arc-shaped box 761. The support base 763 is hinged to the connecting block 765 via a cylindrical pin 766. A contact plate 767 is fixedly installed on the connecting block 765. Multiple trapezoidal protrusions 768 are arranged in a linear array on the outer surface of the contact plate 767, and the inner walls at both ends of the contact plate 767 are fixedly connected to the compression springs 764.

[0053] The main frame of the contact module 76 is an arc-shaped box 761, which is made of high-strength metal material and has an overall arc-shaped structure. This allows it to fit the arc-shaped contour of the inner side of the movable plate 72, providing a stable mounting base for the internal components. On the outer side of the arc-shaped box 761, multiple arc-shaped blocks 762 are arranged in a linear array along the arc direction. The curvature and size of the arc-shaped blocks 762 match the rectangular slots 725 on the movable plate 72. During installation, the arc-shaped blocks 762 are embedded into the rectangular slots 725, facilitating the rapid installation of the contact module 76.

[0054] The support base 763 is the main supporting component of the contact plate 767. The compression spring 764 provides elastic driving force for the adaptive adjustment of the contact plate 767. The support base 763 is hinged to the connecting block 765 via a cylindrical pin 766, allowing the connecting block 765 to rotate flexibly around the cylindrical pin 766, providing a margin of freedom for angle adjustment of the contact plate 767. The contact plate 767 is fixedly mounted on the end of the connecting block 765 furthest from the support base 763; the contact plate 767 is made of wear-resistant and anti-slip material.

[0055] The trapezoidal protrusion 768 significantly increases the friction between the contact plate and the object being measured, preventing the material from slipping during the stretching process. When the contact plate 767 contacts the object being measured, depending on the shape and size of the object, the contact plate 767 can rotate around the cylindrical pin 766 via the connecting block 765. At this time, the compression springs 764 at both ends will be stretched or compressed accordingly. Combined with the rotation of the movable plate 72, this pushes the contact plate 767 to always maintain a tight fit with the surface of the object being measured, ensuring maximum contact area and thus guaranteeing the stability of the clamping.

[0056] It should be noted that, since the shapes and sizes of the objects being tested vary, the contact module 76 can be selected according to the shape and size of the objects being tested. Contact modules 76 of different thicknesses can be selected to cooperate with objects of different sizes, or contact plates 767 of different shapes can be selected to cooperate with objects of different shapes, thereby further ensuring the maximum contact area and preventing the objects being tested from falling off the contact module 76 during the tensile test.

[0057] As shown in Figure 9, the movable block 74 has a conical structure. Multiple rectangular protrusions 742 are arranged in a circular array around the axis on the outer circumference of the movable block 74. The multiple rectangular protrusions 742 are slidably engaged with multiple rectangular grooves 724. A circular groove 741 is provided in the middle of the movable block 74.

[0058] When the movable block 74 slides inside the movable plate 72, the conical outer wall can form a gradual contact relationship with the inner side of the movable plate 72. As the displacement of the movable block 74 changes, the movable plate 72 can be rotated accordingly through the guiding effect of the conical surface, thereby driving the contact module 76 to clamp or release the object being measured, thus achieving a tighter clamping force with greater tension.

[0059] The rectangular protrusion 742 is adapted to the rectangular groove 724. The height of the protrusion is slightly lower than the depth of the groove, and the width is fitted with the width of the groove. When the moving block 74 is installed inside the movable plate 72, the multiple rectangular protrusions 742 are respectively embedded in the multiple rectangular grooves 724, forming a sliding fit structure. This sliding fit not only provides precise guidance for the axial movement of the moving block 74, ensuring that the moving block 74 will not deviate or jam during the force application process, but also, through the rigid contact between the rectangular protrusions 742 and the rectangular grooves 724, evenly transmits the tension on the moving block 74 to each movable plate 72, ensuring that the multiple movable plates 72 move synchronously and avoiding clamping imbalance caused by uneven force application. When the object to be measured is installed, its end can partially extend into the circular groove 741, which is suitable for objects of different lengths.

[0060] like Figure 7 As shown, the inner circumference of the rotating ring 73 is provided with threaded protrusions 731, and the threaded protrusions 731 cooperate with multiple tooth blocks 722. Multiple cylindrical rods 732 are arranged in a ring array around the axis on the outer circumference of the rotating ring 73.

[0061] When the rotating ring 73 rotates under the operator's action, the threaded protrusions 731 on the inner wall and the toothed block 722 generate a meshing force, converting the circumferential rotation of the rotating ring 73 into the oscillating motion of the movable plate 72 around the fixed pin 713. When the rotating ring 73 rotates to a specific position, it can maintain its current state without external force, preventing the movable plate 72 from rotating in the opposite direction due to force, thereby ensuring that the clamping force of the contact module 76 on the object being measured remains stable.

[0062] The cylindrical rod 732 provides the operator with a convenient point of force application. By holding the cylindrical rod 732, the rotating ring 73 can be easily rotated, effectively reducing the labor intensity of manual operation. The circular array layout of multiple cylindrical rods 732 ensures that the operator can easily apply force from different angles, avoiding the impact on adjustment efficiency due to operating space limitations.

[0063] It should be noted that there is a certain thread gap between the threaded protrusion 731 of the rotating ring 73 and the toothed block 722. This gap is used to ensure that during the tensile test, the movable plate 72 can move slightly relative to the rotating ring 73, thereby further clamping and fixing the object under test and preventing the object under test from falling off the contact module 76.

[0064] like Figures 3 to 6 As shown, the connecting plate 723 has a wedge-shaped structure, and the wedge-shaped surface on the inner side of the connecting plate 723 slides in conjunction with the conical surface on the moving block 74.

[0065] The inner side of the connecting plate 723 is specially machined into a wedge-shaped surface, and the angle of the wedge-shaped surface is exactly the same as that of the conical surface of the outer circumference of the moving block 74, ensuring that the two can achieve a large-area tight fit when in contact. When the moving block 74 slides axially inside the movable plate 72, a smooth sliding fit is formed between the wedge-shaped surface of the connecting plate 723 and the conical surface of the moving block 74. The force conversion and transmission are achieved through the guiding effect of the inclined surface: the axial displacement of the moving block 74 is transmitted to the wedge-shaped surface of the connecting plate 723 through the conical surface, and then decomposed into a radial force that pushes the movable plate 72 to rotate around the fixed pin 713, causing the movable plate 72 to drive the contact module 76 to move closer to the center or open outward.

[0066] The inclined surface contact can increase the force-bearing area between the two, reduce the pressure per unit area, reduce component wear, and extend service life. At the same time, as the sliding distance of the moving block 74 increases, the contact position between the wedge surface and the conical surface changes continuously. Through the force amplification effect of the inclined surface, a larger clamping force can be generated under the same tension, further enhancing the adaptive clamping effect of the greater the tension, the tighter the clamping.

[0067] like Figures 3 to 6 As shown, the toothed block 722 has a wedge-shaped structure, and the height of the toothed block 722 near the limiting block 721 is less than the height of the end away from the limiting block 721.

[0068] Specifically, the height of the toothed block 722 near the limiting block 721 is less than the height of the end away from the limiting block 721. That is, the toothed block 722 gradually increases in height from the side closest to the limiting block 721 to the other side, forming a smooth, sloping surface. When the rotating ring 73 rotates, the contact position between the threaded protrusion 731 and the toothed block 722 gradually moves from the lower end to the higher end of the toothed block 722. This change in height difference drives the movable plate 72 to rotate slowly, gradually increasing the clamping force of the contact module 76 on the object being measured, thus achieving a stable and controllable clamping process.

[0069] like Figure 2 As shown, a hydraulic pump 21 is installed inside the base 2, and a hydraulic telescopic rod 22 is installed on the hydraulic pump 21. The hydraulic telescopic rod 22 is fixedly connected to the connecting rod 75 on the bottom inner wall of the box 4 through a tension sensor. The hydraulic pump 21 is electrically connected to the control panel 3.

[0070] The hydraulic pump 21 provides a stable and adjustable hydraulic power output, offering a continuous and reliable driving force for tensile testing. The hydraulic telescopic rod 22 is fixedly connected to the connecting rod 75 on the bottom inner wall of the housing 4 via a tensile sensor. The tensile sensor can detect the magnitude of the tensile force transmitted from the hydraulic telescopic rod 22 to the connecting rod 75 in real time and convert the mechanical signal into an electrical signal for transmission. This not only achieves efficient power transmission but also enables precise monitoring of the force value during the stretching process via the tensile sensor.

[0071] The control panel 3 can send control commands such as start, stop, and speed adjustment to the hydraulic pump 21. The operator can set parameters such as tension speed and target tension through the control panel 3. The commands are transmitted to the control module of the hydraulic pump 21 through the circuit to achieve precise control of the operating status of the hydraulic pump 21.

[0072] The overall working principle of this invention is as follows: When performing tensile testing on building materials, the operator first opens the door panel 5 using handle 6 and places one end of the object to be tested inside the lower tensile assembly 7 and the other end inside the upper tensile assembly 7. The two ends of the object are located within the upper and lower discs 71 and the moving block 74, respectively. The operator then manually rotates the upper rotating ring 73 using the cylindrical rod 732. The rotating ring 73 rotates on the movable plate 72. As the rotating ring 73 rotates, it moves axially downwards, causing the movable plate 72 to rotate. This allows the contact module 76 on the movable plate 72 to contact the object being tested. During contact, depending on the shape and size of the object being measured, the trapezoidal protrusion 768 on the contact module 76 will contact the outer surface of the object being measured. At the same time, the contact plate 767 will rotate around the cylindrical pin 766 as the origin, and the compression springs 764 on both sides will deform to ensure that the contact plate 767 can make horizontal contact with the object being measured, thereby increasing the contact area and thus increasing the contact friction. Meanwhile, the upper movable plate 72 and the disc 71 will move downwards under their own weight, and the movable plate 72 will slide slightly downwards on the moving block 74. When the rotating ring 73 rotates to the point where it can no longer move axially, one end of the object being measured is fixed.

[0073] Similarly, the operator manually rotates the lower rotating ring 73 via the cylindrical rod 732. The rotating ring 73 will rotate on the movable plate 72. As the rotating ring 73 rotates, it will move axially upward and drive the movable plate 72 to rotate, thereby making the contact module 76 on the movable plate 72 contact the object being measured. Depending on the shape and size of the object being measured, the trapezoidal protrusion 768 on the contact module 76 will contact the outer surface of the object being measured. At the same time, the contact plate 767 will rotate around the cylindrical pin 766 as the origin, and the compression springs 764 on both sides will deform to ensure that the contact plate 767 can make horizontal contact with the object being measured, increasing the contact area and thus increasing the contact friction. When the rotating ring 73 rotates to the point where it can no longer move axially, one end of the object being measured is fixed.

[0074] Subsequently, the operator closes the door panel 5 via handle 6 and starts the hydraulic pump 21 inside the base 2 via control panel 3. The hydraulic pump 21 slowly drives the hydraulic telescopic rod 22 to retract, which in turn moves the connecting rod 75 downward. The connecting rod 75 then moves the movable block 74 and the movable plate 72 downward. The rectangular protrusion 742 on the movable block 74 slides within the rectangular groove 724 on the connecting plate 723. When the movable block 74 moves to a certain position with the connecting rod 75, it will move the entire movable plate 72, thereby pulling the object being tested held by the upper and lower tension components 7. The tension sensor detects the force on the object in real time and transmits the detection data to control panel 3 until the object breaks. The operator can observe whether the material inside has broken through the transparent door panel 5. When the object breaks, the operator shuts off the hydraulic pump 21 via control panel 3, thus stopping the entire testing process.

[0075] During the process of the object being tested being subjected to force, as the moving rod moves, the upper and lower moving blocks 74 will slide on the movable plate 72 under the force. Since the movable plate 72 has a conical structure, during the sliding process, the end of the movable plate that is in contact with the movable plate 72 will rotate slightly outward with the fixed pin 713 as the origin, and the other end of the movable plate 72 will rotate slightly inward, causing the contact module 76 to further clamp the object being tested. The greater the tension on the object being tested, the tighter it is clamped, thereby preventing the object being tested from falling off the contact module 76 during the tensile fracture process.

[0076] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A tensile testing device for building materials used in construction engineering, characterized in that, include: The support leg (1), base (2), control panel (3), housing (4), door panel (5), handle (6), and tensioning assembly (7) are fixedly installed on the support leg (1). The base (2) is fixedly installed on the top of the base (2). The housing (4) is fixedly installed on the top of the base (2). The door panel (5) is hinged on the housing (4). The handle (6) is fixedly installed on the door panel (5). The tensioning assembly (7) is fixedly installed on the inner wall of the top and the inner wall of the bottom of the housing (4). The tensioning assembly (7) fixes the object to be tested and stretches the object to be tested. At the same time, it further clamps the material to be tested.

2. The tensile testing device for building materials used in construction engineering as described in claim 1, characterized in that: The stretching assembly (7) includes a disc (71), a movable plate (72), a rotating ring (73), a moving block (74), a connecting rod (75), and a contact module (76). Multiple movable plates (72) are arranged in a circular array around the axis on the disc (71). A rotating ring (73) is rotatably installed on the outer side of the multiple movable plates (72). A moving block (74) is slidably installed on the inner side of the multiple movable plates (72). The moving block (74) is located on one side of the disc (71). A connecting rod (75) is fixedly installed in the middle of the moving block (74). A contact module (76) is fixedly installed on each of the multiple movable plates (72). The multiple contact modules (76) are located on the other side of the disc (71).

3. The tensile testing device for building materials used in construction engineering as described in claim 2, characterized in that: The disk (71) has a circular hole (711) in the middle, and multiple arc-shaped grooves (712) are arranged in a ring around the axis on the disk (71). The multiple arc-shaped grooves (712) are respectively hinged to the multiple movable plates (72) by fixing pins (713).

4. The tensile testing device for building materials used in construction engineering as described in claim 2, characterized in that: A connecting plate (723) is provided on the inner side of one end of the multiple movable plates (72) near the movable block (74), and a rectangular sliding groove (724) is provided in the middle part of each of the multiple connecting plates (723). A stop block (726) is provided on the end of each of the multiple movable plates (72) near the movable block (74). A rectangular groove (725) is provided on the inner side of one end of each of the multiple movable plates (72) away from the movable block (74). A toothed block (722) is provided on the outer side of one end of each of the multiple movable plates (72) away from the movable block (74). A limiting block (721) is provided on the outer side of the middle part of each of the multiple movable plates (72), and the limiting block (721) is located at the end of the toothed block (722).

5. The tensile testing device for building materials used in construction engineering as described in claim 4, characterized in that: The contact module (76) includes an arc-shaped box (761), an arc-shaped block (762), a support base (763), a compression spring (764), a connecting block (765), a cylindrical pin (766), and a contact plate (767); multiple arc-shaped blocks (762) are arranged in a linear array on the outside of the arc-shaped box (761), and the multiple arc-shaped blocks (762) cooperate with the multiple rectangular slots (725); a support base (766) is fixedly installed inside the arc-shaped box (761). 63) Compression springs (764) are fixedly installed at both ends inside the arc-shaped box (761). The support base (763) is hinged to the connecting block (765) by a cylindrical pin (766). A contact plate (767) is fixedly installed on the connecting block (765). Multiple trapezoidal protrusions (768) are arranged in a linear array on the outer surface of the contact plate (767). The inner walls of both ends of the contact plate (767) are fixedly connected to the compression springs (764).

6. The tensile testing device for building materials used in construction engineering as described in claim 5, characterized in that: The movable block (74) has a conical structure. Multiple rectangular protrusions (742) are arranged in a ring around the axis on the outer circumference of the movable block (74). The multiple rectangular protrusions (742) are slidably engaged with the multiple rectangular grooves (724). A circular groove (741) is provided in the middle of the movable block (74).

7. The tensile testing device for building materials used in construction engineering as described in claim 6, characterized in that: The inner circumference of the rotating ring (73) is provided with threaded protrusions (731), and the threaded protrusions (731) cooperate with the plurality of tooth blocks (722). The outer circumference of the rotating ring (73) is provided with a plurality of cylindrical rods (732) arranged in a ring array with the axis as the center.

8. The tensile testing device for building materials used in construction engineering as described in claim 7, characterized in that: The connecting plate (723) has a wedge-shaped structure, and the wedge-shaped surface on the inner side of the connecting plate (723) slides in conjunction with the conical surface on the moving block (74).

9. The tensile testing device for building materials used in construction engineering as described in claim 8, characterized in that: The tooth block (722) has a wedge-shaped structure, and the height of the tooth block (722) near the limiting block (721) is less than the height of the end away from the limiting block (721).

10. The tensile testing device for building materials used in construction engineering as described in claim 9, characterized in that: The base (2) is equipped with a hydraulic pump (21), and a hydraulic telescopic rod (22) is provided on the hydraulic pump (21). The hydraulic telescopic rod (22) is fixedly connected to the connecting rod (75) on the bottom inner wall of the box (4) through a tension sensor. The hydraulic pump (21) is electrically connected to the control panel (3).

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